Ключевые слова: acid, bridge, chemical, clouds, colorful, contaminate, contaminated, contamination, copper, corrosion, cuprum, dangerous, dead, destroyed, destruction, disaster, earth, ecological, ecology, ecosystem, environment, exploitation, garbage, hazardous, industry, iron, kghm, lake, leak, lubin, metal, mine, mineral, most, nature, old, pipe, poison, polluted, pollution, red, reservoir, rudna, ruine, sand, taint, technology, toxic, tube, valve, waste, zelazny,